US1290587A - Valve. - Google Patents

Description

J. 1. LANE.

VALVE. APPLICATION FILED IAN-29,1918.

1,290,587, I Patented Jan.7,1919.

%21/ Z jam J diradzaice stem that projects upwardly through .the'

JOHN J. LANE, OF ST. LOUIS, MISSOURI.

Specification of Letters Patent.

Patented Jan. 7,1919;

Application filed January 29, 1918. Serial No. 214,308.

To all whom it may concern: Be it known that I, J OHN J LANE, a citizen of the United States, residing at St.

Louis, Missouri, haveinv'ented a certain new and useful Improvement in Valves, of which the following is a full, clear, and exact de scription, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to valves, and par ticularly to valves of the type shown in my prior U. S. Patent No. 1,225,974, granted to me on the 15th day of May, 1917, wherein the stem of the valve is provided with a coneshaped portion that projects upwardly into a tapered seat in the bonnetof the valve, so as to prevent leakage around the portion of the top of the bonnet.

The main object of my present invention is to provide a valve of the character referred to, in which the cone-shaped portion and tapered seat that prevent leakage around the valve stem are augmented or safe-guarded by the provision of an independent leakprev'enting means that is actuated by the pressure of the fluid in the valve;

, Another object is to provide a packless valve of the general type referred to that is equipped with the usual leak-preventing means and also with an independent, removable means for preventing leakage around the valve stem in case the first mentioned means becomes inoperative. Other objects and desirable features of my invention will be hereinafter pointed out.

Figure 1 of the drawings is a vertical sectional view of a valve constructed in accordance with my invention and a Fig. 2 is 'a horizontal sectional view, taken on the line 22 of Fig. 1.

zontal valveseat 1 in said body. The valve C is carried by a member 2 that is vertically movable in the bonnet and which is provided I with V-shaped ribs 3 that cooperate with correspondingly shaped grooves 4 formed in the lower portion of the bonnet B to prevent rotary movement of said member. The

valve stem D is in threaded engagement with the member 2 so as move the valve 0 toward or away from its seat, as desired, by rotation of said stem.

The stem D is provided intermediate its ends with an enlarged conical portion 6 that projects upwardly into a tapered seat 7 formed in the bonnet B, said portion 6 being forced upwardly into its seat by a coiled expansion spring 8 interposed between a shoulder 9 in the bonnet and an abutment 10 on the valve stem D and also by the upward pressure which the medium controlled by the valve exerts oi the conical portion 6;

I have found in practice that the conical portion 6 and cooperating tapered seat 7 do not always perform their intended function, this being due to several causes, some of which are,the lodgment betweenthe cooperating surfaces of particles of foreign matter, poor or faulty grindingin of these surfaces, and weakening or breakage of the spring that holds said surfaces in contact.

seal the valve stem consists of a resilient or flexible disk E arranged on the valve stem which cooperates with an annular seat 11 formed in the bonnet B adjacent the conical surface 7. The disk E isprovided with an opening 12, preferably non-circular, that fits over a correspondingly-shaped portion 13 on the valve stem immediately under the enlarged conical portion 6. The disk E is free to move vertically relatively to the portion 6 and is retained in operative position Referring to the drawings which illustrate the preferredform of my invention. A

designates the valve casing or body, B the 45 on said stem by any suitable means, the means herein shown consisting of a circular piece of wire 14 that is sprung into a groove 15 under said disk. By the simple means just described the disk is held securely in op erative position on the valve stem D, but can be readily removed for replacement by simply removing the spring wire 14 and slipping the disk oif of the valve stem endwise.

As shown in Fig. 1, the disk E is so disposed between the base of the enlarged conical portion 6 and the retaining wire 14 that it is permitted a slight vertical movement 'on the valve stem, and consequently, can'be forced against its seat 11 absolutely inde retaining wire 15, and consequently, will'be a slight distance away from its seat 11. As

soon as thev'alve'C is opened soasto admit a' fluid under pressure to thebonnet B, the

pressure therein will act to force the disk upwardly. against its seat and against: the base of the conical portion 6-, thus prevent ing: any of-the'fluid from escaping around the valve stem. It is obvious that should the conical portion 6 and its cooperating seat 7 not engage properly at anytime, due to various reasonsheretofore mentioned; the pressure-of the medium that passes through the VEtlVB'Willl' automatically seat the diskE, and thus eflectivelyprev'ent any leakage of fluid around the valve-stein. Itis'also obviousthat' when the valve C is in its extreme open position, the upper edge of the member 2 willengage" thedislr and positively force it into engagement with its sea-t, thus further insuring a tight joint. 7

I prefer to form thedi'slrE of fiber or vulcanite, as these materials can be obtained cheaply and are possessed of the desired wearingqualities,-:flexibility and resiliency, butIdo 'notwishto-limit myself to any particular material, as- I am aware of various compositions-which are'equally well adapted fonthis purpose? By constructing a valve in the manner above described there iszno' liability of the fluid that passes through-the valve leaking or escaping around the valve stem, asthe usual leak-preventing" means is augmented by an additional leak-preventing means which operatesindependently of said firstmentioned means. My improvement can be installedin the valve at a very slight addi tional expense,=is easily applied, and-readily detachablefor the purpose of renewal.

Having thus described myinvention; what I; claim, and desire to secure by Letters Patent is: v 4

' 1. A packless-valve having a cohe sha-ped portion on the; stemthat projects upwardly into a tapered: seat in the valve body for preventingale'akage' around the valve stem, and additional ;leak-preventing means inde- ,pendentof Saidfirst mentioned means and r adapted-,to'be'operated by the pressure of themedium which the valve-controls;

portion provid'ed with a bonnet: that has a tapered seat, a valve, a vertically-movable member in said-body portion to which the valve is connected-, a stenffor operatingisaid member a cone-shaped portion-on said stem that projects upwardly into the seat in the bonnet, a second sea-ton the bonnet and an auxiliarysealing device loosely mounted on the stem below saidcone-shaped portion and adapted to be forced upwardly against said second seat by the internal pressure in the valve body, s'aid device being so arranged that said vertically-movable member will force said device tightly against its seat when the valve is wide open. ,7

3. In a packless valve, a vertically-movable valve,=an operating stem for said valve arranged for rotation in the valve bonnet,

a conical portion'onsaidstemthat projects the valve-body adjacent the tapered seat,

and a member movably'mounted on the valve stem and adapted to be forced upwardly against said horizontal seat by the pressure of the medium in thevalve body:

5. In a-packless valve of: the type having:

a conical portifo'non thevalve stemthat projects upwardly; into atapered seat in the valve body, an annular horizontalseaton-the valve body adjacent theta-pered seat-and; a

member loosely mounted on'said valve stem" that is adapted to be forced [upwardly against saidhorizontal se'at by'the pressure of "the mediumcontrolled by the valve. 1

6; In a packlessvalveofthe type having conical portion on the'valv'e stem that-pro-' jectsupwardly into. a tapered seat in the valve body, an annular horizontal seat on-the valve body adjacent-the tapered seat, and a resilient membermovably mounted on said valve stemand adaptedto be forced up wardly against said horizontal' seat by the internal pressure 'inthevalve body.

7 In a packless' valve ofthe type;having a conical portion on=the-valve stem that projects upwardly into atapered seat in the valve body, an annular horizontal seat on the valve-body adjacent the tapered-seat, and a removable member movablymounted on said valvestem thatis-a'dapted to be'forced upwardly against: said horizontal seat'by the p internal-pressureinthe valvebody. V 2-. A: packless valve, comprisinga" body 8. In-apackless valve of the type having a conical portion onthe valvesteinthatprojects' upwardly into a tapered seat-in the valvebody, an annular horizontal seat on the valve-body adj acent the tapered seat, and a flexible member vertically movable" onsaid valve stem that is adapted to be forced upwardly against said: horizontal seat' by the prizssure of the" medium controlled by the V3) V6.

9. In a packless valve of the type having a conical portion on the valve stem that projects upwardly into a tapered seat in the valve body, an annular horizontal seat on the valve body adjacent the tapered seat, a non-circular portion on said valve stem, and a disk-shaped member that is adapted to be forced upwardly against said horizontal seat by the pressure of the medium controlled by the valve, said member having a non-circular opening therein that fits over the non-circular portion of said valve stem.

10. In a packless valve of the type having a conical portion on the valve stem that projects upwardly into a tapered seat in the valve body, an annular horizontal seat on the valve body adjacent the tapered seat, a member movably mounted on said valve stem that is adapted to be forced upwardly against said horizontal seat by the pressure of the medium controlled by the valve, and

detachable means for retainmg said member in operative position.

JOHN J. LANE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0."

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